Bung.



E. N. GREENWUOD.

PATBNTED JULY 5, 1904.

No. 764,120. Patented July 5, 1904.

UNITED STATES PATENT OEEICE..

Y EDIVIN N. GREENIVOOD, OF CHICAGO, ILLINOIS, ASSIGNOR TO NATIONAL g METAL BUNG COMPANY, OF CHICAGO, ILLINOIS.

SPECIFICATION forming part of Letters Patent No. 764,120, dated July 5, 1904.

Application filed .Tune 20, 1903. Serial No. 162,389. (No model.)

T @u 107mm it may @0n/007%! Fig. 6 an enlarged section taken at the line Be it known that I, EDWIN N. GREENWOOD, 6 on Fig. 5 and viewed in the direction of the 45 a citizen of the United States, residing at Chiarrow. cago, in the county of Cook and State of Illi- From a disk a, of sheet-steel, I form by nois, have invented a new and useful Improvestamping with a suitable die the cup A, (repment in Bungs, of which the following is a resented in Fig 3,) and from a disk a, of the specification` same material, somewhat smaller in diameter 50 The object of my invention is to provide a than the disk a and containing a central openconstruction of metal bung which shall suping a2, Iform in a similar manner the cup Af, ".0 plant bungs cast from metal. (Represented in Fig. 4.) The smaller cup is in The cast-metal bung in all of the various troduced in inverted position into the cup A constructions in which it is provided is objecto bear at its open end against the base of the tionablc by reason of its weight, its rigidity, outer cup, whereby the open end of the latter, and the cost of producing it. When such a owing to itsgreater length, projects beyond I5 bung is driven into the bung-hole of a cask the perforate closed end of the cup sufficiently or into the bushing with which the bung-hole t0 afford a flange b, formed by bending the is equipped, the bung becomes tightly wedged projecting portion of the cup A over the adtherein, and because of its rigidity the matjacent end of the inner cup, to securely and ter of withdrawingit involves great difficulty, permanently unite the two parts and produce 2O often causing either fracture of the bung or the bung B. The opening a2 admits a bunginjury to the cask. puller.

My improved construction of metal bung The bung may be finished to ornament it by renders it comparatively cheap to manufaccoating it with tin or other suitable material, ture, light in weight, and so yielding that while which fills the seam between the flange and 25 it holds its position when driven into place as inner cup and that between the inner edge of securely as the cast-metal article it may be the cup A and the base of the outer cup. Both withdrawn easily without danger of injury to cups are shown slightly rounded about their itself or to the cask. outer edges as a result of the stamping oper- To produce my improved article, I form it ation of forming each.

30 in two parts, one contained within the other The form of the parts may be changed and and permanently secured therein. the construction maybe variously modified in Referring to the accompanying drawings, matters of detail without departure from my Figure 1 is a plan view of a sheet-metal disk invention, which is therefore not intended to forming a blank to be stamped into cup shape be limited to the exact construction herein 35 and afford the outer part of the bung; Fig. shown and'described.

2, a similar view of a like disk, but of smaller What I claim as new, and desire to secure diameter and provided with a central opening by Letters Patent, is 8O to be stamped into cup shape and afford the l. A bung adapted to be driven in the inner part of the bung; Fig. 3, a perspective bung-hole of a barrel, consisting of an inner 40 view of the cup formed from the blank shown inverted rigid metal cup-shaped member, and in Fig. 1; Fig. 4, a similar view of the cup an outer rigid metal cup-shaped member into formed from the blank shown in Fig. 2; Fig. which the inner member closely fits, said outer 85 5, a similar view of the complete bung, and member having a closed lower end and a continueus inwardly-extending rigid flange at its upper end overlapping and permanently eenining the inner inverted member.

2. A bung' adapted to be driven in the bung-hole of e barrel, consisting' of en inner inverted rigid metal eup-sheped member heving e puller-opening', and an outer rig-id metal cup-shaped member into whieh the inner member closely lits, seid outer member having' e Closed lower end and a Continuous inwardly- IO extending rigid flange et its upper end overlapping and pernmnently confining* the inner inverted member.

EDV 1N N. GREEN\VOOD. In presence @f VALTER N. VINBERG, A. C, KITTLESON. 

